Created on: Thu 27 Jul 2006 09:43:26 PM
Last saved: Wed 16 Aug 2006 10:33:33 PM

=================================================================
                            Overview
=================================================================
This directory contains supplemental build information to
configure and install PDL on a windows system with the cygwin
toolset (http://www.cygwin.com).

The cygwin library provides the missing unix/posix functionality
to allow unix applications to be more easily ported to windows.
A windows PC with cygwin looks like different flavor of unix.
Since cygwin looks like a unix, [almost] all of the standard
perl functionality works and PDL can build pretty much as it
does on other unix systems.

See the INSTALL file for instructions on building and
installing PDL on cygwin and for notes on building the external
dependencies.

See the PDL/win32 subdirectory for instructions on building a
native windows PDL.


=================================================================
                             WORKING
=================================================================
The cygwin PDL includes all the base PDL functionality          
including bad values support (if configured) as well as the     
following modules which depend on the presence of various       
external dependencies:                                          

 PDL::FFTW
  (Builds if FFTW version 2 has been hand built and installed,
   cygwin only comes with FFTW version 3.  The PDL interface
   is to be updated to v3 support following PDL 2.4.3 release)

 PDL::Graphics::PGPLOT
  (Builds if pgplot library has been hand built and installed)

 PDL::Graphics::PLplot
  (Builds if plplot library has been hand built and installed)

 PDL::Graphics::TriD
  (Builds automatically if you have X11 and OpenGL installed.
   It seems to work with native OpenGL as well as Mesa.  Both
   X11 and OpenGL support are installed via cygwin setup.exe)                 

 PDL::GSL::*
 PDL::GSLSF::*
  (Builds if GSL is installed via cygwin setup.exe)

 PDL::IO::GD
  (Builds if the gd lib is installed via cygwin setup.exe)

 PDL::GIS::Proj
 PDL::Transform::Proj4
  (Builds if PROJ has been installed via cygwin setup.exe)

 PDL::Slatec
  (Builds if ExtUtils::F77 has been installed)



=================================================================
                           NOT WORKING
=================================================================
These modules with external dependencies are not yet available
for cygwin:

 PDL::Graphics::IIS
  
 PDL::Graphics::Karma   (Karma has not been ported to cygwin)
  
 PDL::IO::Browser       (Build will fail if enabled, disabled
                         by default for all OSes)

 PDL::IO::HDF           (HDF has not been ported to cygwin)
  
 PDL::IO::NDF           (NDF has not been ported to cygwin)